JPH0435547Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a soundproof gas turbine power generation unit, and particularly to its heat and soundproof structure.

[Prior Art] A gas turbine power generation device is well known, which uses a gas turbine engine to obtain constant rotational operation, and uses this rotation to drive a generator to perform a desired power generation operation, and is suitable for use in areas where commercial power is not available. In addition, the value of its use as an emergency power source during power outages in hospitals and the like has increased significantly in recent years.

Normally, a power generation device using a gas turbine engine can be configured to be smaller and lighter than a power generation device using a diesel engine, but on the other hand, the noise generated by the operation of the engine is high frequency and loud. There was a problem that the information could leak outside and cause harm. Especially when used in facilities such as hospitals, it is necessary to suppress this noise to a minimum.

For this reason, in conventional devices, the housing housing the gas turbine engine is lined with a sound absorbing material to prevent noise from leaking outside.

FIG. 4 shows a longitudinal sectional view of a conventional soundproof gas turbine power generation unit. In the figure, a gas turbine engine 1 to which a generator 9 is directly connected and an intake pipe 2a and an exhaust pipe 2b are connected is operated together with the generator 9 by a controller 3. The output of the generator 9 is converted into alternating current by an inverter 4. Further, an engine oil cooler 5 is provided to cool the engine oil, and cooling air is forcedly circulated by an oil cooler blower 5a.
Heat generated within the unit is dissipated to the outside by a heat exhaust blower 6, and each of the above-mentioned elements is housed in a housing 8, the entire surface of which is lined with sound absorbing material 7.

With this configuration, the operating noise of the gas turbine engine 1 is shielded by the sound absorbing material 7, and leakage to the outside is prevented.

[Problems to be solved by the invention] In the conventional device described above, as shown in the figure,
The entire housing 8 is lined with a sound absorbing material 7, and as a result, due to the heat insulating effect of the sound absorbing material 7, heat generated from the gas turbine engine 1 is trapped inside the housing 8 without escaping to the outside. However, there was a problem in that the temperature inside the housing 8 was significantly increased.

In the conventional device, the gas turbine engine 1 serving as the heat source and other components such as the controller 3, the rectifier, and the inverter 4 are arranged in a mixed manner, and these devices with low heat resistance are placed inside the housing. There was a problem in that it was easily destroyed or its properties deteriorated due to the intense heat.

The sound-absorbing material lining of the housing 5 has the drawback of significantly adversely affecting the cooling performance of the oil cooler 5 used as a cooler for the gas turbine engine 1, and significantly reducing its cooling efficiency.

Of course, even in the conventional device, the housing 8
As mentioned above, the exhaust heat blower 6 and the oil cooler blower 5a are provided to dissipate the heat inside the engine, but as mentioned above, in the conventional equipment, the gas turbine engine and other components are arranged in a mixed manner. However, the dissipation of internal heat and intake of cooling air by the blower simultaneously causes the problem of leaking noise generated from the gas turbine engine to the outside. Conventionally, the mutually contradictory issues of heat dissipation and soundproofing have been solved. The problem was that I couldn't do it.

Purpose of the invention This invention was made to solve these problems, and its purpose is to prevent damage to controllers and inverters caused by temperature rise inside the unit due to radiant heat from the gas turbine engine, and leakage of operating noise to the outside. An object of the present invention is to provide a soundproof gas turbine power generation unit that can efficiently prevent the above.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a gas turbine engine to which an intake pipe and an exhaust pipe are connected, a generator directly connected to the gas turbine engine, and a gas turbine engine to which an intake pipe and an exhaust pipe are connected. A rectifier that rectifies the output of the generator, an inverter that converts the output of the rectifier into alternating current, a controller that controls the gas turbine engine and the inverter, an engine oil cooler, and air for internal combustion and exhaust heat of the engine. A soundproof gas turbine power generation unit comprising: a housing equipped with an air blower that takes in air from the outside and housing each of the above-mentioned elements; The first room houses the gas turbine engine and generator, which are sources of thermal noise, and the second room houses the controller, inverter, rectifier, and engine oil cooler, which have low heat resistance. The inner surface of the first chamber and the gas turbine engine, exhaust pipe, and generator, which are the components in the first chamber, are each covered with a heat-insulating and sound-absorbing material having a plurality of protrusions, and each of the protrusions is covered with upper and lower parts. It is characterized by forming crank-shaped air flow passages by arranging them alternately in different directions.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described based on the drawings FIG. 1, FIG. 2, and FIG. 3.

FIG. 1 is a front longitudinal cross-sectional view of a gas turbine power generation unit according to the present invention, and FIGS. 2 and 3 are a side cross-sectional view and a plan cross-section of the first chamber of the gas turbine power generation unit according to the present invention, respectively. A diagram is shown. In the figure, a housing 10 that houses each element of a gas turbine power generator includes a frame 12, and an intermediate partition wall 14 defines a first chamber 1 inside the frame 12.
It is divided into two chambers 00 and 200. A gas turbine engine 16 is arranged in the first chamber 100. A generator 18 is directly connected to the front of the gas turbine engine 16, an intake pipe 20 is connected to the upper part of the generator 18, and an exhaust pipe 22 is connected to the back of the generator 18 for discharging combustion exhaust gas and heat to the outside.

Unlike the above-mentioned conventional device in which the entire surface of the housing is lined with sound absorbing material, the first chamber 1
00, the gas turbine engine 16, the exhaust pipe 22, and the generator 18 are covered with heat-insulating and sound-absorbing materials 28 and 30 having multiple stages of heat-insulating protrusions 28a, 28b, 30a, and 30b. A crank-shaped air flow path 29 is formed by alternately arranging the air flow paths 28a to 30b.
A heat exhaust port 27 is disposed in the front outer panel 10b, which is the end portion 6.

The characteristic feature of this invention is that the housing 1
0 is divided into a first chamber 100 and a second chamber by an intermediate partition wall 14.
The chamber 200 is divided into two parts, including a gas turbine engine 16 and a generator 18, which are sources of thermal noise, and an exhaust pipe 2.
2 into the first chamber 100 in which the crank-shaped air flow path 29 is formed of heat-insulating and sound-insulating material, and the controller 36, rectifier, and inverter 34, which have poor heat resistance.
The engine oil cooler 38 is located in the second chamber 200.
The reason for this is that they are housed in separate compartments to isolate the two.

As a result, each component in the second chamber 200
It is not adversely affected by the heat from the gas turbine engine 16 in the chamber 100, and because the ventilation gear gallery 38 always maintains good ventilation and heat dissipation, its characteristics do not deteriorate and the original state is maintained. Can fully demonstrate its functions.

Furthermore, in the cheek, the inner surface of the first chamber 100 and the gas turbine engine 16 and the generator 1, which are sources of thermal noise,
8, the exhaust pipe 22 is covered with a heat insulating and sound absorbing material 28, 30 having a plurality of heat insulating protrusions 28a, 28b, 30a, 30b, respectively. The air supply blower 26 is provided on the upper surface of the first chamber 100, which is the starting end of the crank-shaped air passages 29 and the starting end of the crank-shaped air passages 29, which are alternately arranged to face each other from the bottom direction. , the radiant heat from the gas turbine engine 16 and the exhaust pipe 22 does not cause the temperature inside the first chamber 100 to rise above a certain level, and the exhaust port 27 provided in the front outer plate 10b, which is the terminal end of the crank-shaped air flow path 29, is released to the outside via the

Further, in the embodiment, the heat insulating protrusions 28a to 30b, which are arranged alternately in the vertical direction, are arranged concentrically outward from the center of the first chamber 100, as shown in FIG. It has a substantially square annular shape, and as a result, the noise or heat that tends to be concentrated in the center of the first chamber 100 can escape while passing through the annular heat insulating protrusions 28a to 30b. It is possible to significantly attenuate the level as it passes through the very long path.

Of course, in the present invention, the heat insulating protrusion 28~
30b does not necessarily have to have such an annular shape, but in order to lengthen the passage length, it is also preferable that the protrusions are divided into plate-like protrusions.

Regarding the noise prevention effect of the unit according to the present invention, the noise recorded by the conventional device was reduced to 60 to 65 phon when using the device according to the present invention. has been confirmed through experiments, and the effectiveness of the present invention is extremely large.

In this way, the controller 3 in the second chamber 200
2. The rectifier and inverter 34 can operate without being adversely affected by the radiant heat from the gas turbine engine 16, and the cooling air used for the engine oil cooler 36 is also provided with an unheated external source suitable for cooling. Air ventilation gear 38
It can be taken in at any time via the , which greatly improves cooling efficiency. These heat dissipation functions do not conflict with each other, and at the same time, leakage of engine operating noise to the outside can be effectively prevented.

[Effects of the invention] As explained above, according to the invention, the controller, rectifier, and inverter, which have poor heat resistance, are thermally isolated from the gas turbine engine, preventing damage due to temperature rise, and improving the engine oil cooler. Cooling performance is also improved.

Furthermore, the heat and noise generated by the gas turbine engine and generator are quickly disposed of without adversely affecting the inside or outside of the unit, resulting in a soundproof gas turbine power generation unit with extremely high efficiency and excellent performance.

[Brief explanation of drawings]

Fig. 1 is a front longitudinal cross-sectional view of a soundproof gas turbine power generation unit according to the present invention, Fig. 2 is a side cross-sectional view of the first chamber according to the present invention, Fig. 3 is a plan cross-sectional view of the first chamber, and Fig. The figure is a front sectional view of a conventional gas turbine power generation unit. 10...Housing, 14...Intermediate partition wall, 1
6... Gas turbine engine, 18... Generator,
20...Intake pipe, 22...Exhaust pipe, 28, 30...
...Heat-insulating sound-absorbing material, 29...Crank-shaped air flow path, 2
8a, 28b, 30a, 30b...insulating protrusion,
32... Controller, 34... Rectifier and inverter, 36... Engine oil cooler.

Claims (1)

[Scope of utility model registration request] A gas turbine engine to which an intake pipe and an exhaust pipe are connected, a generator directly connected to the gas turbine engine, and a rectifier that rectifies the output of the generator.
an inverter that converts the output of the rectifier into alternating current;
The housing includes a controller for controlling the gas turbine engine and the inverter, an engine oil cooler, and an air supply blower for taking in air from the outside for internal combustion and exhaust heat of the engine, and housing each of the above elements. In a soundproof gas turbine power generation unit in which at least a part of the interior is provided with a heat and sound insulation material, the housing is divided into two chambers by an intermediate partition wall, and the first chamber contains the gas turbine engine, which is a source of thermal noise, and the housing. A generator is housed in the second chamber, and the controller, an inverter, a rectifier, and an engine oil cooler having low heat resistance are housed in the second chamber, and the inner surface of the first chamber and the gas turbine engine which are the components in the first chamber are housed. and the generator are each covered with a heat-insulating and sound-insulating material having a plurality of heat-insulating protrusions, and the heat-insulating protrusions are arranged alternately in the vertical direction to form a crank-shaped air flow path. Soundproof gas turbine power generation unit.